/*
 CryptoJS v3.0.2
 code.google.com/p/crypto-js
 (c) 2009-2012 by Jeff Mott. All rights reserved.
 code.google.com/p/crypto-js/wiki/License
 */
/**
 * Zero padding strategy.
 */
CryptoJS.pad.ZeroPadding = {
	pad: function (data, blockSize) {
		// Shortcut
		var blockSizeBytes = blockSize * 4;
		// Pad
		data.clamp();
		data.sigBytes += blockSizeBytes - ((data.sigBytes % blockSizeBytes) || blockSizeBytes);
	},

	unpad: function (data) {
		// Shortcut
		var dataWords = data.words;
		// Unpad
		var i = data.sigBytes - 1;
		while (!((dataWords[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff)) {
			i--;
		}
		data.sigBytes = i + 1;
	}
};
